Maybe you've been lucky but if you take this rhetoric to RimfireCentral, you'll hear the same story. I would NEVER put a centerfire scope on a rimfire that didn't have adjustable parallax. It is absolutely an issue, I have absolutely seen it but what I do I know, I only have 70 of them.
And I'm not talking about gun shop myth and legend. Rather information from folks like John Lachuk who had a .44 magnum wildcat before Elmer Keith bugged S&W about it. Proven through experience. It's almost laughable that this is a foreign concept to any serious shooter.
I don't have any scopes on 22RF rifles. I just never have seen the point. I came up shooting them with iron sights and I still do.